Sapphire Toxic Edition R9 280X Video Card Review @HiTech Legion
 

The 280X comes overclocked at 1100MHz with a boost clock of 1150MHz. There are 128 texture units in the 280X, and 2048 stream processors. The memory is clocked at 6.4 GHz and the card runs on 250W board power. The Sapphire Toxic 280X is 12.25” long and requires two expansion slots in a case.

http://www.hitechlegion.com/reviews/...55-sap-280-tox